Energy Resources
Concepts (9)
Conventional energy sources like coal, oil, gas, and large hydro are long-used, finite, and contribute significantly to India's energy mix, but pose environmental and energy security challenges.
Conventional energy sources are traditional and widely used for energy generation, having been in use for a long time. These include fossil fuels such as coal, oil, and natural gas, as well as conventional nuclear power and large-scale hydroelectricity. They are generally abundant and easily accessible but are finite and associated with significant environmental impacts like air pollution, greenhouse gas emissions, and climate change.
Coal: India's primary energy source, accounting for about 71% of electricity generation as of 2021 (Ministry of Power). Coal consumption reached 20.9 exajoules in 2021. Coal is formed from ancient plant matter under heat and pressure. Its types, in increasing order of carbon content and quality, are:
- Peat: First stage, low carbon, high moisture, low calorific value.
- Lignite: Brown coal, 40-55% carbon, used for electricity generation in Neyveli (Tamil Nadu).
- Bituminous: Most common, 60-80% carbon, high calorific value, used in thermal power plants and metallurgy. Major coalfields include Jharia, Raniganj, Bokaro, Godavari Valley, and Talcher.
- Anthracite: Highest quality, over 80% carbon, hard, shiny, low moisture, found mainly in Jammu & Kashmir.
Petroleum (Crude Oil): A fossil fuel formed from marine organisms. It is a vital energy source, but India is heavily import-dependent (around 70%, projected to rise to 90% by 2030). Major producing regions in India include Mumbai High (offshore), Assam (Digboi, Naharkatiya), Gujarat (Ankleshwar), and Rajasthan (Barmer basin). Petroleum refining separates crude oil into products like petrol, diesel, kerosene, and LPG. OPEC (Organization of the Petroleum Exporting Countries) plays a significant role in global oil prices and supply.
Natural Gas: Often found with petroleum deposits, it is a cleaner fossil fuel. Major reserves in India are in the Krishna-Godavari (KG) basin, Assam, and Gujarat. India's dependence on imported natural gas is increasing to meet demand, as domestic production is insufficient.
Hydroelectricity: Generated by harnessing the kinetic energy of flowing water. It is a renewable source but considered conventional due to large-scale infrastructure and environmental impacts (submergence, displacement). India has a significant hydropower potential (estimated at 1,50,000 MW, contributing about 20% of energy requirement by 2031-32), but its development faces challenges like high project costs, long gestation periods, and ecological concerns (Integrated Energy Policy 2031-32). The energy mix in India also includes about 2% from nuclear power, which has a long gestation period and high capital intensity.
Exam Angle: Prelims often test coal types, major producing regions for coal, petroleum, and natural gas, and India's energy mix percentages. Mains questions focus on challenges of energy security, environmental impact of fossil fuels, the need for diversification, and policy measures like the Integrated Energy Policy (2031-32) which projects coal as the primary source (60%) even by 2031-32, and petroleum at 25%.
geo-map-Major Coalfields and Petroleum Basins in India
Conventional energy sources form the backbone of India's energy supply, crucial for its economic growth and industrialization. However, their finite nature and environmental consequences necessitate a detailed understanding of their characteristics, challenges, and policy implications.
Coal: The Dominant Player with Quality Concerns Coal remains the single largest contributor to India's energy basket, powering over 70% of its electricity generation. The Integrated Energy Policy (2031-32) explicitly states that 'Coal' would be the 'primary source of energy accounting for 60 per cent even by 2031-32 and thermal power generation alone accounting for 47 per cent.' While India possesses vast proven reserves, estimated to last over 100 years, a significant concern is the quality. Indian coal generally has a high ash content and low calorific value, which reduces efficiency, increases transportation costs, and exacerbates air pollution. Historically, the coal sector has been under a government monopoly, leading to calls for reforms to open it to private and foreign participation and market-determined pricing to reflect its scarcity value and promote efficient use. Efforts are also needed in 'coal forecasting' to optimize resource management.
Petroleum: The Import Burden and Strategic Imperatives Petroleum is projected to account for 25% of India's energy requirement by 2031-32. However, the most critical challenge is India's heavy import dependence, currently around 70%, which is expected to rise to 90% by 2030. This makes the Indian economy highly vulnerable to volatile international crude petroleum prices and geopolitical tensions. The Integrated Energy Policy (2031-32) suggested creating strategic reserves of crude petroleum for at least 90 days to mitigate supply shocks. Some European countries have announced goals for zero dependence on crude petroleum, highlighting a long-term aspiration for India as well, though it remains a distant goal given current trends. Domestic production from regions like Mumbai High, Assam, Gujarat, and Rajasthan, while significant, is insufficient to meet the burgeoning demand.
Natural Gas: The Cleaner Fossil Fuel with Supply Gaps Natural gas is often touted as a bridge fuel in the transition to a low-carbon economy due to its lower emissions compared to coal and oil. India aims for a 'gas-based economy,' but domestic production, particularly from the Krishna-Godavari basin, has struggled to keep pace with demand, leading to increasing reliance on imported Liquefied Natural Gas (LNG). This again raises concerns about energy security and price volatility.
Hydroelectricity: Untapped Potential and Environmental Dilemmas Hydroelectric power is a renewable source with a significant untapped potential in India, estimated at 1,50,000 MW. However, its development is fraught with challenges. The Integrated Energy Policy (2031-32) cautioned on its high cost of power generation and emphasized evaluating its impact on ecological imbalances and habitation. Large dams often lead to displacement of communities, deforestation, and altered river ecosystems, making project clearances complex and time-consuming.
Nuclear Power: The Future with Long Gestation and High Costs Nuclear energy is considered a source for the future, but its contribution to India's energy mix is currently modest (around 2%). The policy suggests that any significant change in the energy mix from nuclear power can only be expected beyond 2050, primarily due to long gestation periods in commissioning plants, uncertainties in securing nuclear fuels from other countries, and high capital intensity. Furthermore, concerns about potential dangers of radiation leakages, nuclear waste management, and their long-term impact remain critical considerations.
Comparison with Non-Conventional Sources and Mains Angles: Conventional sources, despite their abundance and accessibility, are finite and have a substantial environmental footprint. This contrasts sharply with non-conventional (renewable) sources like solar, wind, and biomass, which are naturally replenished and have a minimal carbon footprint. The shift towards non-conventional sources is crucial for environmental sustainability and enhancing energy security by reducing dependence on imported fossil fuels. For Mains essays, key angles include:
- Energy Security: Discuss India's vulnerability due to import dependence on crude oil and natural gas, and the role of strategic reserves and diversification.
- Environmental Sustainability: Analyze the impact of conventional energy on climate change, air pollution, and the imperative for a just energy transition.
- Policy Challenges: Evaluate the effectiveness of policies like the Integrated Energy Policy (2031-32) in balancing energy demand with environmental goals and promoting indigenous production.
- Economic Implications: Discuss the high capital intensity of nuclear and hydro projects, the cost of imported fuels, and the financial health of State Electricity Boards (SEBs) due to transmission losses and underpricing.
Recent Developments: The emphasis on energy conservation, increasing energy efficiency, and lowering energy intensity, as highlighted by the Integrated Energy Policy, reflects a growing awareness. R&D efforts are being stepped up to develop viable alternatives, and the concept of a National Energy Fund by levying a cess on energy sector companies has been proposed to finance these initiatives. India's commitment to reducing its carbon footprint under international agreements further pushes the agenda for transitioning away from over-reliance on conventional fossil fuels.
India's energy transition focuses on renewable sources like solar, wind, and biomass, alongside strategic nuclear power, to enhance energy security, mitigate climate change, and achieve sustainable de
Definition
Renewable and Alternative Energy sources, also known as Non-Conventional Sources of Energy, are derived from natural processes that are continuously replenished. Unlike fossil fuels, they have a minimal environmental impact, producing significantly lower greenhouse gas emissions and contributing to climate change mitigation. These sources are crucial for achieving energy security and sustainable development.
Key Sources and Their Importance
India is aggressively pursuing the development and utilization of various renewable and alternative energy sources:
- Solar Energy: Conversion of sunlight into electricity (photovoltaic) or heat (solar thermal). India has immense solar potential, with initiatives like the International Solar Alliance (ISA) and large-scale solar parks. It is a key driver for rural electrification and decentralized power generation.
- Wind Energy: Harnessing wind power using turbines. India ranks among the top countries globally in installed wind power capacity, particularly in states like Tamil Nadu, Gujarat, and Rajasthan.
- Biomass Energy: Energy derived from organic matter such as agricultural residues, animal waste, and dedicated energy crops. It can be converted into electricity, heat, or biofuels. Energy plantations refer to cultivating fast-growing trees and plants specifically for energy production.
- Hydro Energy (Small Hydro): Power generated from the kinetic energy of flowing water, typically from projects under 25 MW capacity. While large hydro is often considered conventional, small hydro is categorized under renewables due to its lower environmental impact and decentralized nature.
- Geothermal Energy: Utilizes heat from the Earth's interior. India has identified several geothermal hotspots, particularly in the Himalayas and peninsular regions, though its development is nascent.
- Tidal Energy: Harnesses the energy from ocean tides. India has potential sites in the Gulf of Khambhat and Gulf of Kutch.
- Wave Energy: Captures energy from ocean surface waves. This technology is still in experimental stages in India.
- Hydrogen Fuel: A clean fuel that produces only water upon combustion. Green Hydrogen, produced via electrolysis using renewable electricity, is a major focus of India's National Green Hydrogen Mission launched in 2023, aiming to make India a global hub for green hydrogen production and export.
- Microbial Fuel Cells (MFCs): A bio-electrochemical system that drives an electric current by mimicking bacterial interactions found in nature. MFCs use microbes to oxidize organic matter and generate electricity, offering potential for waste treatment and energy recovery.
Nuclear Energy: A Critical Alternative
Nuclear energy is considered a non-conventional source in the context of its non-fossil fuel nature, despite being a conventional source in terms of long-standing use. It plays a critical role in India's energy mix due to its high energy density and low carbon emissions during operation.
- Fuel Sources: Primarily uranium and thorium. India has limited uranium reserves but abundant thorium reserves, making the Three-Stage Nuclear Power Programme crucial for long-term energy security.
- Legal Framework: The Atomic Energy Act, 1962, governs the development, control, and use of atomic energy in India. It vests the exclusive right to produce, develop, use, and dispose of atomic energy with the Central Government, primarily through public sector undertakings like the Nuclear Power Corporation of India Limited (NPCIL).
- Challenges: High capital costs, long gestation periods, nuclear waste management, and public perception regarding safety concerns.
Exam Angle
Understanding the definitions, specific examples, and the strategic importance of each source, along with India's policy initiatives (e.g., 500 GW non-fossil fuel capacity by 2030 target), is vital for UPSC. The distinction between conventional and non-conventional, and the nuances of nuclear energy's classification, are frequently tested.
geo-map-India's Renewable Energy Potential (Solar, Wind, Hydro, Geothermal)
Analysis: India's Renewable Energy Landscape and Strategic Imperatives
India's push towards renewable and alternative energy is driven by a confluence of factors: escalating energy demand, volatile global fossil fuel prices, climate change commitments under the Paris Agreement, and the aspiration for energy independence. The country has set ambitious targets, including achieving 500 GW of non-fossil fuel-based installed electricity capacity by 2030 and reaching Net Zero emissions by 2070.
- Solar Energy Dominance: Solar power has emerged as the frontrunner, surpassing wind energy in installed capacity. Government schemes like the Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan (PM-KUSUM) for solarizing agricultural pumps and the Rooftop Solar Programme are democratizing solar adoption. The Production Linked Incentive (PLI) scheme for High-Efficiency Solar PV Modules aims to boost domestic manufacturing.
- Wind Energy Potential: India possesses significant onshore and offshore wind potential. The National Offshore Wind Energy Policy, 2015, aims to harness offshore wind resources, particularly along the coasts of Gujarat and Tamil Nadu. Challenges include land acquisition, grid integration, and intermittency.
- Biomass and Waste-to-Energy: Biomass offers a decentralized energy solution, especially for rural areas. Initiatives like the SATAT (Sustainable Alternative Towards Affordable Transportation) scheme promote compressed biogas (CBG) from biomass. Waste-to-energy plants address urban waste management while generating power.
- Geothermal and Ocean Energy: These sources, while having significant theoretical potential, are still in nascent stages of development due to high upfront costs, technological complexities, and limited exploration. India's Puga Valley in Ladakh is a notable geothermal prospect.
- Hydrogen Economy: The National Green Hydrogen Mission (launched January 2023) is pivotal. It aims to develop a green hydrogen production capacity of at least 5 MMT (Million Metric Tonnes) per annum by 2030, attracting over ₹8 lakh crore in investments. This has implications for decarbonizing hard-to-abate sectors like refining, fertilizers, and steel.
- Microbial Fuel Cells (MFCs): Represent an emerging biotechnology for sustainable energy. While still largely in research and development, MFCs hold promise for treating wastewater while simultaneously generating electricity, offering a dual benefit of environmental remediation and energy recovery. This technology aligns with circular economy principles.
Comparison Table: Conventional vs. Non-Conventional Energy Sources
| Feature | Conventional Sources | Non-Conventional (Renewable) Sources |
|---|---|---|
| Definition | Finite, depletable resources, long-used. | Naturally replenished, sustainable. |
| Examples | Coal, Oil, Natural Gas, Conventional Nuclear Power. | Solar, Wind, Hydro, Biomass, Geothermal, Tidal, Wave, Hydrogen. |
| Availability | Abundant but finite; geographically concentrated. | Abundant and widespread; naturally replenished. |
| Environmental Impact | High carbon emissions, air pollution, climate change. | Low/zero carbon emissions, minimal environmental footprint. |
| Cost | Historically cheaper; volatile prices. | Declining costs, becoming competitive; higher initial investment. |
| Energy Security | Dependence on imports, geopolitical risks. | Enhances energy independence, reduces import reliance. |
| Technological Maturity | Well-established, mature technologies. | Rapidly evolving, continuous innovation. |
Case Study: India's Three-Stage Nuclear Power Programme
India's nuclear program, envisioned by Homi J. Bhabha, is unique due to its focus on utilizing the country's vast thorium reserves. The program aims for long-term energy security:
- Stage 1 (Pressurised Heavy Water Reactors - PHWRs): Uses natural uranium as fuel and heavy water as moderator and coolant. Produces electricity and plutonium-239 as a byproduct. India has mastered this technology.
- Stage 2 (Fast Breeder Reactors - FBRs): Uses plutonium-239 (from Stage 1) as fuel and breeds more fissile material (plutonium-239 from uranium-238 or uranium-233 from thorium-232) than it consumes. The Prototype Fast Breeder Reactor (PFBR) at Kalpakkam is a key project.
- Stage 3 (Advanced Heavy Water Reactors - AHWRs): This stage will use thorium-232 and uranium-233 (bred in Stage 2) as fuel. Thorium, being fertile, will be converted to fissile uranium-233 in the reactor. This stage aims to achieve self-sufficiency in nuclear fuel.
The Atomic Energy Act, 1962, empowers the Central Government to control all aspects of nuclear energy, ensuring strategic autonomy and safety. While there have been discussions regarding private sector participation in the nuclear energy supply chain, the ownership and operation of nuclear power plants remain with government entities like NPCIL, as mandated by the Act.
Mains Hooks
- Energy Security and Geopolitics: Diversification of energy sources reduces reliance on imported fossil fuels, mitigating geopolitical risks and price volatility. Renewable energy contributes significantly to India's strategic autonomy.
- Climate Change Mitigation: India's ambitious renewable energy targets are central to its Nationally Determined Contributions (NDCs) under the Paris Agreement, showcasing global leadership in climate action.
- Sustainable Development Goals (SDGs): Access to affordable, reliable, sustainable, and modern energy (SDG 7) is directly addressed by the expansion of renewable energy. It also has linkages to poverty reduction, health, and economic growth.
- Green Jobs and Economic Growth: The renewable energy sector is a significant creator of jobs, fostering innovation, and attracting investments, contributing to economic growth and 'Make in India' initiatives.
- Decentralized Energy Solutions: Renewables, particularly solar and biomass, offer viable solutions for electrifying remote and underserved areas, reducing transmission losses and improving energy access.
Recent Developments
- National Green Hydrogen Mission (2023): Aims to position India as a global hub for green hydrogen production and export, with significant financial outlay and targets for capacity and investment.
- PM-KUSUM Scheme Expansion: Continued focus on solarizing agricultural pumps, promoting decentralized solar power generation, and increasing farmers' income.
- Renewable Energy Zones (REZs) and Green Energy Corridors: Development of dedicated infrastructure for evacuation and transmission of renewable energy from high-potential areas to demand centers.
- Energy Storage Solutions: Increased emphasis on battery energy storage systems (BESS) and pumped hydro storage to address the intermittency of renewable sources and ensure grid stability.
The energy crisis, driven by finite fossil fuels and climate change, necessitates a global transition to sustainable, non-conventional energy sources for economic growth and environmental security.
Definition
An Energy Crisis refers to a significant shortage in the supply of energy resources, leading to increased prices, economic disruption, and challenges to national security. This crisis is largely driven by the depletion of conventional fossil fuels (coal, oil, natural gas), geopolitical instabilities affecting supply chains, and the escalating environmental impact of their consumption.
Energy Transition is the structural shift in the global energy system from fossil-fuel-based sources to renewable and low-carbon energy sources. This transition aims to achieve energy security, economic stability, and environmental sustainability, particularly in the context of climate change mitigation.
Key Facts
- Conventional vs. Non-Conventional Energy: Conventional sources (fossil fuels, traditional hydropower, nuclear) have been dominant but are finite and environmentally damaging. Non-conventional (renewable) sources (solar, wind, modern hydro, biomass, geothermal, tidal) are naturally replenished and have lower environmental impact.
- India's Energy Mix: India heavily relies on thermal power, primarily coal, for electricity generation. In 2021, India's coal consumption reached 20.9 exajoules, indicating significant dependence. Oil and natural gas also constitute a substantial portion, leading to high import dependence.
- Challenges with Conventional Sources: These include price volatility (especially for crude petroleum), import dependence, high capital intensity for nuclear and large hydro projects, long gestation periods, and severe environmental consequences like air pollution and greenhouse gas emissions.
- Renewable Potential: India possesses immense potential for non-conventional energy, particularly solar and wind. The International Renewable Energy Agency (IRENA) highlights solar power as a key area for growth.
- Strategic Reserves: To mitigate the impact of international crude petroleum price volatility, India aims to create strategic reserves of crude petroleum for at least 90 days of consumption.
Mechanism of Transition
India's energy transition involves a multi-pronged approach:
- Diversification of Energy Sources: Shifting away from fossil fuels towards a greater share of solar, wind, and other renewables.
- Research & Development (R&D): Investing in R&D for viable alternatives to oil, improving energy efficiency, and developing advanced storage solutions.
- Policy & Regulatory Support: Implementing schemes like PM-KUSUM (Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan) to promote solar energy in agriculture, and establishing bodies like the Indian Renewable Energy Development Agency (IREDA) to finance renewable energy projects.
- Energy Conservation & Efficiency: Promoting measures to lower energy intensity across all sectors.
- Grid Modernization: Enhancing grid infrastructure to integrate intermittent renewable energy sources effectively and ensure reliability.
Exam Angle
Understanding the energy crisis and transition is crucial for UPSC as it intersects with Economic Geography, Environmental Studies, Governance, and International Relations. Questions often focus on India's energy security, climate change commitments, policy initiatives, and the socio-economic implications of shifting energy paradigms. The transition is vital for sustainable economic development, public health benefits (reduced pollution), and technological innovation.
geo-map-India's Renewable Energy Potential
Analysis: Drivers and Complexities of Energy Transition
The global energy crisis is multifaceted, driven by a confluence of factors. Firstly, the finite nature of fossil fuel reserves means that peak oil production is a looming threat, leading to supply constraints. Secondly, geopolitical instability in major oil-producing regions can disrupt supply chains and cause extreme price volatility, as seen in recent years. Thirdly, the undeniable scientific consensus on climate change necessitates a drastic reduction in greenhouse gas emissions, making the shift away from fossil fuels an environmental imperative.
For emerging economies like India, the energy transition presents unique complexities. While the push for low-carbon pathways is essential, it must advance alongside growth, energy security, and resilience. Rapid introduction of complex renewable energy systems without adequate buffers, redundancy, and institutional capacity can lead to fragility, as observed in some advanced economies where storage lags investment, balancing costs rise, and transmission systems face stress under shifting load conditions. This highlights the importance of sequencing and systemic design in energy transition strategies.
Comparison Table: Conventional vs. Non-Conventional Energy Sources
| Feature | Conventional Energy Sources | Non-Conventional Energy Sources |
|---|---|---|
| Availability | Finite reserves (coal, oil, natural gas); abundant but geographically concentrated (hydro, nuclear fuels). | Abundant, naturally replenished (solar, wind, biomass, geothermal). |
| Environmental Impact | High carbon emissions, air pollution, climate change, habitat destruction (mining, dams). | Low to zero carbon emissions, minimal air pollution, reduced environmental footprint. |
| Cost | Volatile fuel prices, high extraction/transport costs; established infrastructure. | Declining technology costs, high initial capital investment for infrastructure; stable operational costs. |
| Technology Maturity | Mature, well-established technologies. | Rapidly evolving, continuous innovation in efficiency, storage, and grid integration. |
| Energy Security | Prone to geopolitical risks, import dependence. | Enhances energy independence and security, decentralized generation potential. |
| Examples | Coal, Petroleum, Natural Gas, Conventional Hydropower, Nuclear Fission. | Solar, Wind, Biomass, Geothermal, Tidal, Small Hydropower. |
Case Study: India's Energy Transition Journey
India's energy transition is a critical component of its development agenda. With a rapidly growing economy and population, ensuring affordable, reliable, and sustainable energy is paramount. India has set ambitious targets for renewable energy capacity, aiming for 500 GW of non-fossil fuel-based energy capacity by 2030.
- Solar Power: India is a global leader in solar energy deployment, driven by schemes like PM-KUSUM which supports farmers in installing solar pumps and setting up grid-connected solar power plants. The National Solar Mission has been instrumental in scaling up solar capacity.
- Wind Power: India has significant wind power potential, particularly in coastal and hilly regions. The government promotes wind energy through various policies and incentives.
- Hydropower: While large hydropower projects (above 25 MW) were previously not classified as renewable, the government has reclassified them to boost investment. However, concerns regarding ecological impact and rehabilitation remain, as highlighted by the reference material which cautions on its high cost and ecological impact.
- Nuclear Energy: Considered a source for the future, nuclear energy faces challenges of long gestation periods, high capital intensity, fuel availability, and safety concerns (radiation leakages, waste disposal). Its contribution to the energy mix is optimistically projected to remain limited (e.g., less than 5% by 2050).
- Strategic Petroleum Reserves: India has established strategic crude oil reserves at locations like Visakhapatnam, Mangaluru, and Padur to cushion against supply disruptions and price shocks.
Mains Hooks
- Sustainable Development Goals (SDGs): Energy transition directly contributes to SDG 7 (Affordable and Clean Energy) and SDG 13 (Climate Action).
- Aatmanirbhar Bharat: Reducing import dependence on fossil fuels through domestic renewable energy production aligns with the vision of a self-reliant India.
- Climate Diplomacy: India's leadership in international initiatives like the International Solar Alliance (ISA) showcases its commitment to global climate action and energy cooperation.
- Economic Growth & Job Creation: Investment in renewable energy infrastructure and manufacturing creates new industries and employment opportunities.
- Energy Security: Diversifying the energy mix reduces vulnerability to geopolitical risks and price volatility, enhancing national energy security.
Recent Developments
- Green Hydrogen Mission: India launched the National Green Hydrogen Mission with an outlay of ₹19,744 crore to make India a global hub for green hydrogen production, utilization, and export. This is a significant step towards decarbonizing hard-to-abate sectors.
- Renewable Energy Storage: Increased focus on battery energy storage systems (BESS) and pumped hydro storage to address the intermittency of solar and wind power, crucial for grid stability.
- Smart Grids: Development of smart grid technologies and advanced transmission systems to efficiently integrate and manage diverse energy sources, ensuring reliable power supply.
- International Collaborations: India continues to engage in partnerships with countries and international bodies to share technology, expertise, and finance for renewable energy projects.
This is a method of storing energy using gravity. It uses two water reservoirs at different heights. When there is extra electricity, water is pumped to the top reservoir. When energy is needed, the water flows down to turn turbines.
This is a method of storing energy using gravity. It uses two water reservoirs at different heights. When there is extra electricity, water is pumped to the top reservoir. When energy is needed, the water flows down to turn turbines. It is excellent for long-duration storage.
Natural uranium has very little U-235, which is needed for power. Enrichment increases the percentage of U-235. For commercial nuclear power plants, enrichment of 3% to 5% is enough. High enrichment (over 90%) is only used for nuclear weapons.
Natural uranium has very little U-235, which is needed for power. Enrichment increases the percentage of U-235. For commercial nuclear power plants, enrichment of 3% to 5% is enough. High enrichment (over 90%) is only used for nuclear weapons.
DERs are small-scale units that generate or store electricity locally. Instead of one giant power plant, DERs use many small sources. Examples include battery storage, biomass generators, fuel cells, and rooftop solar units.
DERs are small-scale units that generate or store electricity locally. Instead of one giant power plant, DERs use many small sources. Examples include battery storage, biomass generators, fuel cells, and rooftop solar units. They make the power grid more flexible and reduce transmission losses.
Carbonization is the slow chemical process by which plant matter turns into coal. This happens under high pressure and temperature without oxygen. As the process continues, the amount of carbon increases while moisture decreases.
Carbonization is the slow chemical process by which plant matter turns into coal. This happens under high pressure and temperature without oxygen. As the process continues, the amount of carbon increases while moisture decreases. This makes the coal a better fuel. Example: Peat is the initial product of carbonization, while Anthracite is the final, most carbon-rich stage.
Coking coal is a specific type of bituminous coal. When heated without air, it turns into 'coke.' Coke is used in blast furnaces to melt iron ore because it is strong and porous. India has a shortage of this coal.
Coking coal is a specific type of bituminous coal. When heated without air, it turns into 'coke.' Coke is used in blast furnaces to melt iron ore because it is strong and porous. India has a shortage of this coal. Example: Most of India's coking coal is imported from Australia to support the domestic steel industry.
Gondwana coal is old (250 million years) and found in the southern peninsula. It is mostly free of moisture and high in carbon. Tertiary coal is young (15-60 million years) and found in the Himalayas and North-East.
Gondwana coal is old (250 million years) and found in the southern peninsula. It is mostly free of moisture and high in carbon. Tertiary coal is young (15-60 million years) and found in the Himalayas and North-East. It has high sulfur and moisture content. Example: Coal from Jharkhand is Gondwana, while coal from Assam is Tertiary.
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